An interpretation of Motzkin numbers, the 9 paths from (0, 0) to (4, 0) using only steps northeast, east, and southeast, never dipping below the y-axis.
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment |
| current | 14:27, 8 March 2008 |  | 500×300 (4 KB) | Robertd (Talk | contribs) | |
| 16:00, 22 December 2007 |  | 500×300 (2 KB) | Robertd (Talk | contribs) | |
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